Reversing-gear.



J. FERRER & E. ALONSO.

REVERSING GEAR.

APPLICATION FILED AUG-8. I914.

Patented Nov. 9, 1915.

3 SHEETSSHEET I.

J. FERRER & E. ALONSO.

REVERSING GEAR.

APPLICATION FILED AUG-8. 1914 Patented Nov; 9, 1915.

3 SHEETSSHEET 2.

WITNESSES G M COLUMBIA PLANOGRAPH 60.,WA5HINU1ON. IL:

J. FERRER & E. ALONSO.

REVERSING GEAR.

APPLICATION man AUG.8. 1914. 1,160,058., Patented Nov. 9, 1915. 3 SHEETSSHEET 3.

WITNESSES MEMO/r5 OYLdcfQ M Jase 27712 ATTOR/VES Col-Um PLANOGRAPH CO. WASHINGTON. D. C.

iirrnn srs "ea N1 oration JOSE FERREB AND ELIAS ALONSO, OF SAN JUAN, PORTO RICO.

REVEBSING-GEAR.

Specification of Letters lateut.

Patented Nov. 9, 1915.

To all whom it may concern:

Be it known that we, Josri FERRER, 3.?I1 American citizen, and ELIAS ALONSO, a c1t1- zenof Cuba, and residents of San Juan, in the District of San Juan and Island of Porto Rico, have invented certain new and useful Improvements in Reversing-Gears, of

which the following is a specification.

Our invention relates to steam engines, particularly to engines provided with rotary valves for the steam inlet and exhaust, and the main object thereof is to provide means for reversing the engines.

A further object is to provide means for reversing the engine while in operation.

A further object is to accomplish this by changing the relationship of the rotary valve with respect to the crank-shaft of the engine.

A further object is to provide manual means for such reversing which are normally locked against movement.

A further object is to accomplish this result by means of a train of gears and a sectional shaft for valve rotation; and further objects are to provide such reversing means which are readily operable, simple in operation, construction, and installation, so formed as not to easily get out of order to require repair, and which are comparatively inexpensive.

Our invention is fully described in the following specification, of which the accompanying drawings form a part, in which the same reference characters are used to designate the same parts in each of the views,

. and in which Figure l is a central, longitudinal, horizontal, section taken through a steam engine provided with a present preferred form of our invention; Fig. 2 is an enlarged section taken on the line 2-2 of Fig. 1; Fig. 3 is a section taken on the line 33 of Fig. 2, of fragmentary form; Fig. a is a face view of the valve which we use; Fig. 5 is an enlarged, central, longitudinal, section taken on the line 55 of Fig. 1; Fig. 6 is a section taken on the line 6-6 of Fig. 5; and Figs. 7 and 8 are views of a detail of the valve-shaft construction.

In the drawings forming a part of this application we have shown a cylinder at of a steam engine of reciprocating type, provided with ports a and a a piston afla rod a therefor, a connectingrod a, and a crankshaft of, all of the usual or any desired construction, and we provide a steam-chest Z) at one side of said cylinder.

The chest 6 consists of a cylindrical memher 6 having removable ends 6 and b the contacting surfaces of which, and of the cylindrical member Z2 being ground to provide a steamtight joint, and the member 6 is provided with a branched steam inlet port 6 and with a branched exhaust port I) the branches of which, as shown in Fig. 3, communicate with recesses b and b of the ends 6 and 12 respectively, said endsbeing also provided with a passage 6 each, in register with the cylinder ports a and 0 as clearly shown in Fig. l.

Rotatable in the steam-chest b is a longitudinally arranged valve-shaft c which is preferably transversely and angularly formed at its outer end, as shown at 0 Figs. 5, 7 and 8, to fit into a similarly recessed coupling 0 keyed to a short shaft 0* rotatable in bearings 0 and to which, in turn, is keyed a casing 0 provided with an internal gear 0 and a cover '0 revoluble with the shaft 0.

Keyed on the valve-shaft c are two oppositely arranged valves (Z and c, spaced apart in the center of the steam-chest and similarly inclined on adjacent faces for a wedge f arranged therebetween, and movable against inclined planes by means of a spring 7, and the object of which is to force the said valves apart, when-worn at their ends, to compensate for such wear automatically, and in no way interfering with the functions of the valves but, instead, assisting the same.

The valve d comprises a disk (Z having a recess (Z in the outer face thereof, as clearly shown in Fig. l, of an arc of a circle exceeding 120 degrees for a concentric portion the radius of which equals the radius of the are on which the passage b of the end 12 is struck, whereby said recess willregister with said passage for a corresponding degree of valve revolution, and said valve is also provided with a concentric slot (Z diametrically opposite the concentric portion of the recess (l entirely through the disk d and of the same radius as the passage 5 referred to,

and of an arc exceeding120 degrees of a circle, whereby said slot willregister with said passage for a corresponding degree ofvalve,

revolution, said slot communicating with the interior of the steam-chest, and itwill thus be seen that the recess (Z and slot d" are alternately carried into register with the said passage and thus into communication with the interior of the cylinder a, in each valve revolution, to admit steam to said cylinder. when said slot is in communication there with, and to exhaust the expanded steam when said recessis in communication therewith.

The valve 6 is in all respects similar to the valve d, having the disk 6 recess 6 and slot 6 adapted, each, to registerwith the passage 6 of the end 6*, alternately, and' thus adapted to exhaust or admit steam. from and tOeSaiCl cylinder on theoppositeside of the piston a from that in communication with the valve cl, and it will be'noted that the slots (Z and e are oppositely arranged whereby one slot and one recess of the two valves are in register at one time with the corresponding passages be, or vice-versa.

7 By reference to Figs. 5' and 6, it will be seen. that the casing 0 supports one end of a gear-shaft it provided with a bevel pinion h at its opposite end enmeshed with. a similar pinon' it on the crankshaft a and whereby said gear-shaft h isrotated, and

said" gear shaft also carries, within'thej cas-' ing'c, an integral diskiz having stub-shafts 71 secured therein and diametrically op posite eachother, and serving as supportsfor freely revoluble spur pin-ions-h which are in mesh with the internal gear 0 'ofthe casing c and, by reference to Fig. 5, it will be seen that we provide a ring 71 connected with. the stub-shafts k by means of screws F to maintain said stub-shaftsand spur pinions-in: stability.

Projecting through the cover 0 of thecasing c isasleeve 2' revoluble therein and on the gear-shaft It, as also in the support 5 said sleeve carrying a spur gear i at itsinner end in mesh with the pinions 7L a planetary gear thus resulting, and a handwheel' i" is provided at the outer end of said sleeve,,preferably by means of a ratchet and pawlconnection with a plate 2' secured to the bearing" support 2' as shown at i the details of this feature not being illustrated as any suitable form or equivalent may be employed to hold the hand-wheel against movement with the gear-shaft h, but said hand-wheel is manually revol-ublein a direction opposite to that of the said shaft, for

reversing, the valve positions from those previously occupied, to reverse the engine.-

The operation is very simple: The steam enters the' inlet port 5 passes thence to the left end of the-cylinder-a through slotd, passage 6 andport a and the-pistonis forced outwardly, actuatingfthe crank-shaft a through an arc of 180' degrees, and'thereby rotatingthe gear-shaft hi'the same degree, by means of the bevel pinions' it? and it the shaft h-revolves the casing o";;through" the medium-of the internal gea'r '0"'and the" rotatable pinions h in mesh therewith and with the normally stationary pinion i it be- 1 ing our intention to provide-apinion relationship insuring a full casing a revolution to a full rotation of the gear-shaft it, thus rotating the shafts 0 and c at the same speed as the shaft it and thus ofthecrankshaft al,iand in; a full outward piston movement, the valves (Z and e are turned through an arc of 180 degrees, whereby steam now enters-the cylinder through the's'lot e and the piston I returns to 1 the initial position shown In: the forward piston movement the air,- at first, and expanded": steam ism forced through the port rtflpassage 6 and recess c to: the corresponding branchof the exhaustport Z), outwardly of: the engine, and-' in the opposite piston movement', 'the steam is exhausted throughpor-t a passage 0 shaft 0, and connected valves-d and a through: an arc of' 1 8O degrees, and tlieiad mission and exhausting of steamto the cyl inder is changed to -the opposite'ends thereof and't-heengine is reversed; It will thus be seen that by merely revolving the hand Wheel i to change the relationshipb'etw'een the gear-shaft hand the sleeved the steam is directed: into the cylinder endopposite to the end-'- thereof receiving steam just-before making said change, and the engine is r'eversed, the change inrelationship being 1 shaft rotation; V

lie.

degrees of a circle in the form shown, and

this change-may; bemade as often asdesired, the hand-Wheel being always revolved in the same direction for such changes, because of the hand-wheel retaining ratchet and pawl arrangement, or equivalent, and such changesmay be made withlt'he gearsha ft" rotating, as will be seen. r 7

Our invention issimple in construction, installation, and operation, fully eflicient,

and comparatively inexpensive, andvarious changes over'the form shown and-described maybe made, within the scope offthe-foh lowing claims, without departing, from the" spirit of our invention vantages. y V g V Having; fully described our-invention,

whatwe claim as new, and desire to secure by Eetter Patent", is-:'.'

1. In an engine, a rotary-valve,a' shaft in operative connection therewith, a casing having an internal gear fixed on said shaft, a supplemental shaft, a plurality of gears thereon in mesh With said internal gear, a normally fixed gear in mesh With said last named gears, means for rotating said supplemental shaft to transmit motion to said first named shaft through said gears, and manual means for revolving said normally fixed gear to change the relationship of said shafts'to reverse said engine.

2. In an engine, a rotary valve, a shaft in operative connection therewith, an internal gear carried thereby, a supplemental shaft, a plurality of gears carried thereby and in mesh With said internal gear, a sleeve on said supplemental shaft, a fixed gear thereon in mesh With said last named gears, means for locking said sleeve against movement, manual means for revolving said sleeve to change the relationship of said shafts, and means for rotating said supplemental shaft to transmit motion to said first named shaft through the medium of said gears.

In testimony that We claim the foregoing as our invention We have signed our names in presence of the subscribing witnesses.

JOSE FERRER. ELIAS ALONSO.

Witnesses:

EUGENIO FIOL, G. SURB PRADO.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

